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The mother of a London businessman killed in China is taking on the authorities to get compensation for his death.

Neil Heywood was found dead in a hotel room in November 2011. Gu Kailai, the wife of the communist party leader, admitted poisoning him. His mother Ann said his children need financial help to cope with his death.

The Chinese ex-police chief who blew the whistle on the murder of London businessman Neil Heywood has been jailed for 15 years.

Wang Lijuan was convicted of defection and abuse of power after visiting the US consulate in Chengdu in February and revealing that Mr Heywood had been murdered.

Neil Heywood was found dead in his hotel room in Chongqing in November 2011 Credit: Reuters

He also revealed that the wife of his boss was involved in the crime. Gu Kailai was handed a suspended death sentence last month for poisoning Heywood with cyanide in the south-western city of Chongqing, where her husband, Bo Xilai, was chief of the Communist Party.

Mr Heywood's death in a hotel last November was initially ruled an accident and put down to alcohol abuse, although his friends said he was not a heavy drinker. Gu's arrest and the ousting of her husband sparked the biggest political turbulence in China since the Tiananmen Square protests in 1989.